Dim cd As New SqlClient.SqlCommand("select * from Fournisseur where Code=" + ComboBox2.Text, cnx)
Dim cd As New SqlClient.SqlCommand("select * from Fournisseur where Code=" & ComboBox2.Text, cnx)
Dim cd As New SqlClient.SqlCommand("select * from Fournisseur where Code='" + ComboBox2.Text+"'", cnx)
var
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